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Inquiry. there have been 18 witnesses and nearly 200 hours of testimony. both behind chosed doors and in public. democrats are expected the to continue on that track by hold both the committee and floor vote before congress breaks for the holiday and if what we're hearing on capitol hill today is any indication, house republicans have zero intent on walk iing way from president trump. >> democrats still can't get over the fact the president won the election and they lost and now and today, we watched them introduce two articles of impeachment. it changed the course of congress to take away due...

Hard time walking and getting through. >> reporter: the dense overgrown underbrush made it difficult for searchers to look for signs of life or much of anything else. >> we have so many people here, you know, so many sets of eyes. >> we're sitting right here. >> reporter: other searches, many of them volunteers, face their own tough challenges, including temperatures and humidity many the upper 90s. they were on all-terrain vehicles and horseback, in kayaks and canoes. >> the heat indices, the insects, the walk iing through rain, the brush, the conditions, it's all very rough. >> reporter: lat...